Nine other men - aged between 22 and 72 - also arrested in connection to the case, have all been released following questioning. 

He's also being held in relation to a hoax security alert last month in Derry.

Six men previously arrested have been released.

The New IRA remains the PSNI's main line of inquiry.

'Both were arrested under the Terrorism Act'

Four other men arrested, aged 22, 38, 43 and 45 have been released without charge. 

Deputy Smith says there is no going back to what this country went through in the past

Dissident republican group, the New IRA, is the primary focus of the investigation.